Mary l



F. W. KROGH, DECD. M. L. KRoGH, F. 1. CLARKE, c. A. noel-l. AND o. PAuLsEN, LEGATEES.

LUBRICATING SYSTEM FOR DEEP WELL PUMPS.

APPLICATION FILED MAY 28, 1918.

Patented Aug. 1`,I 1.922r

2 SHEETS-SHEET l.

IIIIIIH IIIIIIII #IIII 'lliIIIIcIII F. W. KROGH, DECD. M. L. moan, r.1.cLAn| E, c. A. Kauen, AND o. PAuLsEN. LEGATEES.

LUBRIGATING SYSTEM FOR DEEP WELL PUMPS.

APPLICATION FILED MAY 28| 1918. 1,424,362, Patented Aug. 1, 1922.

2 SHEETS-SHEET 2.

.n .ffl/lill. 6 e wwllv UNITED STATES PATENT OFFItE.

FERDINAND W. KROGI-I, OF SAN FRANCISCO, CALIFORNIA; MARY L. KROGI-I, FANNIE J. CLARKE, C. A. KROGII, AND OSCAR POULSEN, LEGATEES BY COURT ORDER OF DISTRIBUTION OF THE ESTATE E' SAID FERDINAND W. KROGrI-I, DECEASED, AS- SIGNORS TO KROGH PUMP .AND MACHINERY COMPANY, OF SAN FRANCISCO, CALI- FORNIA, A CORPORATION OF CALIFORNIA.

LUBRICATING' ,SYSTEM FOR DEEP-WELL PMPS.

Specification of Letters Patent.

' Patentedv Aug. l, 192:2.

means of conducting channels, The oil.V

from the bearings, which exudes therefrom, by leakage or otherwise, is conducted to a waste oil tank, whence it is returned by an oil pump to the supplytank. Suitable hltering means are applied to clarity the oil before itsiinal return tothe supply. @ther features and details of theV invention will be set forth hereinaitcr.

ln the accompanying two sheets of drawf ings l vhave illustrated the invention, by showing it asapplied to deep well centrifugal pump.

Figure 1 is a verticalsection of the upper part of such a pump andthe well to which it is applied, and

Figure 2 is a similar view of the lower part ot' the same.

ln the igures:-The shaft 1 has thereon the iinpcller 2, and is driven by the pulley 3 from any suitable power or an electric motor may rep-lace pulley The well is represented by l and the pump discharge by 5. Surrounding the shaft 1 is the waste oil tube 6, which receives the oil from the bearings within its sphereo't' influence and conducts the same to the waste oil tank 7 through the pipe 8 and the chamber 9 at the top of the tube.

The oil supply tank is shown at 10, and is, in the example chosen for illustration, elevated above the highest bearing of the apparatus so that the oil flows thereto by gravity from the tank 10, oil passes through pipe 11 into receptacle 1.2, which is located at the top of the uppermost bearing 13 of the' apparatus. Any overliow from the receptacle I12 passes through the pipe lll to the tank 7 .A stopfcock 15 in the pipe 11 controls the How of oil to receptacle 12. The leakage from the bearing 13 vpasses down into cup 16, which may be made fast to shaft 1. The collected waste oil in cup 16 overilows the edge of said cup and is received in the annular receptacle 17, and passes thence through'pipe 18 into tank 7. 19 is apipe conducting oil from supply tank 19, to the bearing 20whence the leakage passes partly downward into chamber 9, and thence to tank 7, and partly to the stul'ling box 21,

whence the overflow is received in the cup 22 and4 passes through pipe 23 to tank 7. ne checkvalve may be applied to pipe i9, as at 24 and av valve may be applied to pipe 8, as at 25. A pipe 26 conducts oil from. the supply 10 to the lower bearings 27, and below to any desired number, the overflow from which is received in tube 6, as already stated. A force pump may be interposed in pipe 26, as at 28 which will suck from the upper part oi' the pipe and discharge into the lower part, when it is desired to temporarily increase the pressure of oil upon the bearings supplied by pipe 26. p

Oil is returned from tank 7 to tank 10 by pump 29, which draws from tank 7 through pipe 30, and discharges int-o tank 10 through pipe 31.` The pump 29 is driven by bevel pinion 32 and bevel wheel 33, the latter being feathered upon the shaft 1, as indicated, and held in position by the embracing fork 34, connected to the fixed frame, as at 35, whereby the shaft 1 may play up and down without disturbing the engagement of the bevel gearmg.

suitable screen or filter 36 may be interposed in tank 7 between the various entering' pipes and the out passage pipe 30, whereby the oil is wholly or partially clari ed before it is withdrawn from the tank. A similar screen or filter 37 is similarly applied to tank 10 for a similar purpose.

Having thus described my invention, and an embodiment of it, in the full, clear and exact terms required by law, and knowing that it comprises novel, useful and valuable shaft bearing of a deep Well pump, comprising a supply tank, located abovesaid bearing, means for feeding lubricant from said tank to said bearing, a cup secured to said shaft and rotating therewith, said cup being adapted to receive Waste lubricant from said bearing` and means connected to said cup for conducting said Waste lubricant to said supply tank.

2. A lubricating system for vertical shaft bearings of a deep Well pump, comprising a gravity supply tank, means for feeding lubricant from said supply tank to said bearings, a cup secured to said shaft adapted to receive Waste lubricant from said bearings, a tank for said Waste lubricant, means for connecting said cup to said Waste `tank and automatic means connected to said Waste tank for directing said Waste lubricant to said supply tank.

3. A lubricating system for vertical shaft bearings of deep Well pump, comprising a supply tank, means for'feeding lubricant from said tank to saidbearing's, a cup se cured to said shaft and rotatable 'therewith adapted to receive Waste lubricant from said bearings, an annular stationary receptacle surrounding said cup for said Waste lubri cant. a tank adapted to receive said Waste lubricant and means for carrying` said Waste lubricant from tank to said supply tank.

fl. A lubricating system for vertical shaft bearings of a deep Well pump, comprisinga supply tank, means for feeding lubricant plus and Waste vlubricant from said cup to said waste tank, a pump for directing said lubricant from said Waste tank to said supply tank, and means for operating said pump consisting of a .pinion connected to said pump and a bevely Wheel rotatably vmounted. upon sa'id shaft engaging said pinion.

5. A lubricating system for a vertical shaft bearing of a. deep well pump, comprising a supply tanlnmeans for feeding lubricant to said bearing from said supply tank, a movable cup secured to said shaft and adapted to receive aste lubricant from said bearing, a yreceiving tank for said lubricant and means connected to said tank operated by saidl shaft adapted to .direct lubricant from said receiving` tank to said supply tank.

6. A lubricating system for a vertical shaft bearing of a deep Well pump, comprising a supply tank, means for feeding lubricant from said supply tank to said bearing, a movable cup secured to said shaft below said bearing adapted to receive Waste lubricant from said bearing, an annular fixed receptacle surrounding said movable cup and projecting below thereof, said receptacle being adapted to receive the Waste lubricant from said movable cup, a Waste tank connected to said receptacle, provided with filtering means for said lubricant and a pump operated by said shaft and connected to said Waste tank adapted to carry back filtered lubricant to said supply tank.

lin t imony, that I claim the foregoing I have hereto set my hand this `9 day of May, 1918, in tbe presence of two Witnesses.

FERDINAND `W. KROGH'.

lVitnesses:

Nro/Horns KoRNeoLD, FLORENCE L. VVOLFE. 

